Table 3. Stochastic actor-based models decomposing interdependent substance use into increases (creation function) and decreases (endowment function).
| Effect | Sunshine High | Jefferson High |
|---|---|---|
| Smoking behavior |
beta (s.e.) |
beta (s.e.) |
| Drinking behavior (creation function) | 0.08 (0.13) |
0.00 (0.07) |
| Marijuana use (creation function) | 0.48*** (0.12) |
0.24 (0.17) |
| Drinking behavior |
beta (s.e.) |
beta (s.e.) |
| Smoking behavior (creation function) | 0.10 (0.20) |
0.10 (0.07) |
| Marijuana use (creation function) | 0.48* (0.23) |
0.47*** (0.14) |
| Marijuana use |
beta (s.e.) |
beta (s.e.) |
| Smoking behavior (creation function) | 0.10 (0.13) |
0.08 (0.16) |
| Drinking behavior (creation function) | 0.20 (0.15) |
0.21 (0.17) |
| Smoking behavior |
beta (s.e.) |
beta (s.e.) |
| Drinking behavior (endowment function) | 0.11 (0.08) |
0.07 (0.08) |
| Marijuana use (endowment function) | 0.20 (0.16) |
0.24* (0.12) |
| Drinking behavior |
beta (s.e.) |
beta (s.e.) |
| Smoking behavior (endowment function) | 0.02 (0.07) |
-0.05 (0.06) |
| Marijuana use (endowment function) | 0.22 (0.15) |
0.13 (0.12) |
| Marijuana use |
beta (s.e.) |
beta (s.e.) |
| Smoking behavior endowment function) | 0.09 (0.42) |
-0.07 (0.19) |
| Drinking behavior (endowment function) | 0.08 (0.35) |
-0.17 (0.17) |
Notes
1. Both models control for the same effects on substance use dynamics and network dynamics as included in the SAB models shown in Table 1. The parameter estimates and standard deviations are similar. The full results are available from the authors upon request.
2. † Two-sided p<0.1
* Two-sided p<0.05
** Two-sided p<0.01
*** Two-sided p<0.001